Magneto-electric machine.



MAGNETC' ELECTRIC MACHINE.

AUG. 24. |916. 1,268,689 Patented Juud/1, 1918.

' C 2 SSSSSSSSSSSS LML l W. W. DEAN.

MAGNETO ELECTRIC MACHINE.

Arnlcmon msn' ^uG.24. 191s.

June 4, 1918i?? E T S-S H E ET 2 Patented 2 S H E UNITED sTATEs PATENT oEEICE.

WILLIAM WARREN DEAN, or STANFORD, CONNECTICUT, AssIGNoR T'o srLITnoRl' ELECTRICAL coxrANY, oE NEWARK, NEW JERSEY, A CORPORATION or nw JERSEY.

Specilcation of Letters Patent.

'HAGNETO-ELECIRIC MACHINE.

Patented June 4. 191s.

Application alta August 24, 191s. serial Nef 116,665.

State of Connecticut, have invented certain` new and useful Improvements in Magneto- Electric Machines, ofwhich the following l 1s a specification, reference being had to the accompanying drawing.

My invention relates to new and useful improvements in magneto electric machines for ignition purposes and also to that class of magnetos whichare often used for ignition and lighting.

An object of the invention is to provide a magneto of the above type wherein the rotor may be formed of one piece of tubularsteel having cut-away portions forming spaced prongs or arms serving as the poles of the magnet.

' A furthervv object of the inventionv is to provide a magneto of the above character wherein the cylindrical rotor vis mounted on a shaft, the endwise positionof which may be adjusted to bring the rotor into proper coperative relationwith the current generating coils which are carried by fixed cores. .A still further object of the invention is to provide a means for supporting the generating coils which permits a limited adjustment of the same about the axis of the shaft ca the rotor.

Teseg and other objects will in part be obvious and will in part be hereinafter more fully described.

In the drawings which show by way of illustration one embodiment of my ,inventio Figure 1 is a vertical' and longitudinal sectional view through a magneto having my improvements;

Fig. 2 is a sectional view on the line a-a of Fig. 1; and

Fig. 3 is a perspective view of Aone of the laminations used in making up the cores.

The invention consists'broadly in a generator or magneto having a suitable supporting base provided with uprights or standards, one of which is preferably formed of non-magnetic material. Mounted In said uprights is a rotor, which, as shown 1s formed from one piece of tubular steel` having cutaway portions forming spaced rongs serving as the poles of the magnet. his magnet 1s mounted on the shaft supported the uprights and the shaft is par# allel with the prongs'of the magnet. The

inner ends of these prongs are magnetically connected while the outer ends of prongs are secured to a non-magnetic block to which Is attached one part of the shaft of the rotor. This non-magnetic block is located. back from the ends of the prongs s o that a space is formed between the shaft supporting the rotor-'and the inner face of these prongs. Located in this space is a series of current generating coils. These coils are carried by cores which are connected together and mounted on the non-magnetic upright so that the coils and cores may be angularly adjusted about the axis of the rotor.

- Referring more in detail to the drawings., my improved magneto consists of a support-v ing base 1 preferably formed of cast iron. This supporting base has formed integral therewith a supporting standard 2. Also mounted on the base 1 is a standard 3 which is formed of non-magnetic material. This standard is secured to the base by a bolt 3". The rotor as above noted is in the form of a. permanent magnet and preferably constructed from one piece of tubular steel hav,- ing cutaway portions 4 forming space prongs 5, 6, and 8. The cutaway portions 4 extend only part' way throughoutl the length of said tubular portion and therefore, the prongs are magnetically connected at their outer ends. The inner end of this tubular ortion is secured t'o a shaft 9 by any suitabe means. Located within said tubular portion adjacent to the free ends of the prongs is a non-magnetic block 10. Said block is secured to the prongs by suit-able screws 11. A shaft 12 is formed ,integral with or otherwise secured to. this block 10. Said shaft 12 has a bearing in the upright 3. The shafts 9 and 12 really form a single shaft and will be so referred to hereinafter.

The block 10 is secured to the prongs 5, 6, 7 and 8 at a point back 'from thelr free ends, which forms a space in which is located the cores 13, 14, 15 and 16 of the stationary cur rent generating coils 1'2,l 18, 19 and 2O respectivel These cores are made up of a. group o laminations one of which is indicated at 21 in Fig. 3 of the drawing. Each lamination has a plurality of projecting portions 22 and at the ends of these projecting portions there are laterally extended parts .23 and 24. The outer face of these -extended parts is curved 25 to correspond to the inner'curved surface 26 of the projecting prongs 5, 6, 7 and 8. The projecting portions 22. extend through the coils and the laterally extended parts 23 and 24 form the pole pieces which receive the flux from the poles ofthe rotor. Thev oup of laminations is secured. together by suitable bolts 27 and these bolts clamp these laminations to a supporting. bracket 28. Said bracket 28 is tubular in form and surrounds the shaft l2. Thev bracket is also provided with a flange 29 which is -formed with a series of slots 30. These slots are curved about the axis of the shaft as a center. Screws 31 pass through the slots and secure the bracket to the justment'of the cores and the coils angularly about the axis of the rotor.

A screw 32 extends through the upright and bears against the end of the shaft 12. This screw determines the endwise position 4of the rotor. A lock nut 33 serves to lock the screw in adjusted positions.

Fromthe above descriptionl it will be apl parent that I have provided a magneto wherein the rotor is a multipolar permanent magnet and the shaft which supports the rotor so that it may be either rotated or oscil-- lated is parallel with the prongs or poles of the magnet forming the rotor. The poles of the rotor overlie stationary cores, each of which is provided with a current generating coil and these cores and coils may be angularly adjusted about the axis of the rotor.

Any suitable mechanism may be used for taking the current generated in the coils and I have therefore' neither shown or described such mechanism. It will be understood that one of said coils may be used for ignition purposes while another is used for j lighting or other purposes.

It is obvious that minor changes in the details of construction and the arrangement of the parts may be made without departing from the spirit of the invention as set forth in the appended claims. Having thus described my invention, what I claim as new and desire to secure by Letters Patent, isz-g e a 1. A magneto electric machine comprising a' multipolar permanent magnet rotor the upright 3. These slots permit of a limited ya Lacasse body portion of which is formed from an integral steel cylinder cut-away to provide parallel projecting prongs serving as the poles of the rotor and a plurality of station ary current generating coils disposed within thel path of travel of the prongs.

2; A magneto electric machine comprising a multipolar permanentmagnet rotor the body portion of which is formed from an inwith the axis of the rotor, a plurality of sta- A tionary current generating coils disposed within the path of travel of the prongs of the rotor, a shaft for said rotor, supporting brackets in which. said vshaft rotates and means for supporting said stationary current generating coils on one of said brackets whereby the coils may be adjusted angularly about the axis of the rotor.

Il. A magneto electric machine comprising a multipolar permanent magnet rotor having a plurality of projecting prongs parallel with the axis of th e rotor, a plurality of stationary current generating coils disposed within the path of travel of the prongs of the rotor, a shaft Jfor said rotor, supporting brackets in which said shaft rotates and means for supporting said stationary current generating coils on one of-said brackets whereby the coils may be adjusted angu; larly about theax'is of the rotor, and adjustable means carried by the bracket and bearing against the end of the shaft for determining the position ofthe rotor relative to the coils.

In testimony whereof I hereuntp aix my signature in the presence of two wltnesses.

Donorrrr J. 

